Topeka weather in September: Topeka, Kansas: normal highs, lows, rain and records for September
Topeka in September has a normal high of 81°F and a normal low of 58°F, a daily mean of 69°F, falling from 86°F on the 1st to 76°F by the 30th. Measurable precipitation falls on 8 days in a normal September, 3.52 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 14°C, 89 mm of precipitation in September.
- NOAA stationTopeka Asos
- Station IDUSW00013996
- Location39.07°N 95.63°W
- Elevation876 ft (267 m)
- From the center5 miles
- Population125,467
- Jan 40° 20°
- Feb 46° 24°
- Mar 57° 34°
- Apr 67° 44°
- May 76° 55°
- Jun 86° 65°
- Jul 90° 69°
- Aug 89° 67°
- Sep 81° 58°
- Oct 69° 45°
- Nov 55° 33°
- Dec 44° 24°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Topeka in September?
The normal high is 81°F and the normal low 58°F, for a daily mean of 69.2°F. September is 8.7°F cooler than August and 12.2°F warmer than October. September is the 4th warmest month of the year in Topeka and the 6th wettest. Across the month the normal high falls 10°F, from 86°F on September 1 to 76°F on September 30. From one year to the next September's mean temperature typically moves about 3.3°F either way (NOAA's standard deviation), so roughly two Septembers in three average between 66°F and 73°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 27%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| September 1 | 86°F | 63°F | 27% | 18% |
| September 8 | 84°F | 61°F | 27% | 18% |
| September 15 | 81°F | 58°F | 26% | 18% |
| September 22 | 79°F | 55°F | 25% | 18% |
| September 30 | 76°F | 52°F | 25% | 17% |
Every day of September: normal high, low and chance of precipitation (warmest afternoon September 1, coldest night September 30)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| September 1 | 86°F | 63°F | 27% | 18% | 13 h |
| September 2 | 85°F | 63°F | 27% | 18% | 13 h |
| September 3 | 85°F | 62°F | 27% | 18% | 13 h |
| September 4 | 85°F | 62°F | 27% | 18% | 13 h |
| September 5 | 85°F | 62°F | 27% | 18% | 13 h |
| September 6 | 84°F | 61°F | 27% | 18% | 12 h 50 min |
| September 7 | 84°F | 61°F | 27% | 18% | 12 h 50 min |
| September 8 | 84°F | 61°F | 27% | 18% | 12 h 50 min |
| September 9 | 83°F | 60°F | 27% | 18% | 12 h 50 min |
| September 10 | 83°F | 60°F | 27% | 18% | 12 h 40 min |
| September 11 | 83°F | 59°F | 27% | 18% | 12 h 40 min |
| September 12 | 82°F | 59°F | 26% | 18% | 12 h 40 min |
| September 13 | 82°F | 59°F | 26% | 18% | 12 h 40 min |
| September 14 | 82°F | 58°F | 26% | 18% | 12 h 30 min |
| September 15 | 81°F | 58°F | 26% | 18% | 12 h 30 min |
| September 16 | 81°F | 57°F | 26% | 18% | 12 h 30 min |
| September 17 | 81°F | 57°F | 26% | 18% | 12 h 30 min |
| September 18 | 80°F | 57°F | 26% | 18% | 12 h 20 min |
| September 19 | 80°F | 56°F | 26% | 18% | 12 h 20 min |
| September 20 | 80°F | 56°F | 26% | 18% | 12 h 20 min |
| September 21 | 79°F | 55°F | 26% | 18% | 12 h 20 min |
| September 22 | 79°F | 55°F | 25% | 18% | 12 h 10 min |
| September 23 | 78°F | 55°F | 25% | 17% | 12 h 10 min |
| September 24 | 78°F | 54°F | 25% | 17% | 12 h 10 min |
| September 25 | 78°F | 54°F | 25% | 17% | 12 h 10 min |
| September 26 | 77°F | 53°F | 25% | 17% | 12 h |
| September 27 | 77°F | 53°F | 25% | 17% | 12 h |
| September 28 | 77°F | 53°F | 25% | 17% | 12 h |
| September 29 | 76°F | 52°F | 25% | 17% | 12 h |
| September 30 | 76°F | 52°F | 25% | 17% | 11 h 50 min |
- Normal high
- 81°FSeptember average
- Normal low
- 58°FSeptember average
- Precipitation
- 3.52 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 5
- Daylight
- 13 h to 11 h 50 minSeptember 1 to September 30
- Days at 70°F or more
- 27
- Days at 80°F or more
- 18
- Sunshine
- 82%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013996; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Topeka in September?
On a given September day the chance of 0.01 inch or more is 26% on average, highest around September 1 (27%). In all, 3.52 in falls on 8 days of a normal September, 1 of them with an inch or more.
In a normal September in Topeka, 5 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013996.
How humid and windy is Topeka in September?
At 3 p.m. the normal temperature is 75°F with 43% relative humidity and a dew point of 51°F; at 6 a.m. it is 54°F with 86% humidity. The wind averages 6.9 mph, most often from the south in the afternoon.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 50°F | 86% | 4.6 mph | 72% |
| 9 a.m. | 62°F | 52°F | 70% | 8.0 mph | 79% |
| noon | 72°F | 52°F | 50% | 10.5 mph | 72% |
| 3 p.m. | 75°F | 51°F | 43% | 10.9 mph | 79% |
| 6 p.m. | 69°F | 52°F | 54% | 6.9 mph | 73% |
| 9 p.m. | 61°F | 53°F | 73% | 5.0 mph | 81% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013996. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for September in Topeka?
The warmest September temperature on Topeka's official record (since 1887) is 110°F, on September 3, 1947; the coldest is 29°F, on September 23, 1983. The wettest September brought 12.71 in (1973).
The September mean against the 1991-2020 normal of 69.2°F: 2021 73.3°F (+4.1), 2022 71.8°F (+2.6), 2023 73.8°F (+4.6), 2024 71.8°F (+2.6), 2025 70.3°F (+1.0), 2026 77.2°F (+8.0). 6 of 6 ran warmer than normal.
| September | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 73.3°F | +4.1°F | 3.25 in |
| 2022 | 71.8°F | +2.6°F | 1.21 in |
| 2023 | 73.8°F | +4.6°F | 1.20 in |
| 2024 | 71.8°F | +2.6°F | 1.37 in |
| 2025 | 70.3°F | +1.0°F | 2.09 in |
| 2026 | 77.2°F | +8.0°F | 5.23 in |
Source: records: ACIS, NWS threaded record TOPthr; recent months: ACIS, station USW00013996. Records and recent months use complete months only.
How does September in Topeka compare across Kansas?
Across the 137 places PlainClimate covers in Kansas, September normal highs run from 78°F in Bonner Springs to 86°F in Sublette; Topeka's is 81°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.